FIFTY SHADES OF GREY

E L James's X-rated trilogy picks up where those pillow-biting honeymoon scenes left off. Christian Grey and Anastasia Steele's blush-worthy, handcuff-happy love saga actually began as Twilight fan fiction, which secured an e-book following before it was even available in print last April. Since then, it's become a fixture on the New York Times's best-seller lists, and is following in its predecessor's footsteps as a (steamy) film adaptation.